From 0ad09aa842ab4619f8e978e8c268b74ad37b114b Mon Sep 17 00:00:00 2001
From: George Oikonomou <G.Oikonomou@lboro.ac.uk>
Date: Fri, 11 Nov 2011 11:51:25 +0000
Subject: [PATCH] We now know how to select our source address for outgoing
 routable multicast datagrams

---
 core/net/ipv6/uip-ds6.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/core/net/ipv6/uip-ds6.c b/core/net/ipv6/uip-ds6.c
index 3594f46e1..c5c169afe 100644
--- a/core/net/ipv6/uip-ds6.c
+++ b/core/net/ipv6/uip-ds6.c
@@ -512,6 +512,10 @@ uip_ds6_select_src(uip_ipaddr_t *src, uip_ipaddr_t *dst)
         }
       }
     }
+#if UIP_IPV6_MULTICAST
+  } else if(uip_is_addr_mcast_routable(dst)) {
+    matchaddr = uip_ds6_get_global(ADDR_PREFERRED);
+#endif
   } else {
     matchaddr = uip_ds6_get_link_local(ADDR_PREFERRED);
   }